The reactivity order of the following molecules towards $$\mathrm{S}_{\mathrm{N}} 1$$ reaction is

$$\begin{array}{ccc} \text { Allyl chloride } & \text { Chlorobenzene } & \text { Ethyl chloride } \\ \text { (I) } & \text { (II) } & \text { (III) } \end{array}$$

The major product of the following reaction is :

Among the following chlorides the compounds which will be hydrolysed most easily and most slowly in aqueous NaOH solution are respectively:

1. Methoxymethyl chloride

2. Benzyl chloride

3. Neopentyl chloride

4. Propyl chloride

$$C{H_3} - O - C{H_2} - Cl\mathrel{\mathop{\kern0pt\longrightarrow} \limits_\Delta ^{aq{.^\Theta }OH}} C{H_3} - O - C{H_2} - OH$$

Which information below regarding this reaction is applicable?